Patent No. EP2878233 (titled "Glass Assembly") was filed by PAN DUR Holding on Nov 28, 2014. The application was issued on Aug 3, 2022.

Patent oppositions filed by competitors challenge the validity of a granted patent. These oppositions are typically based on claims of prior art, lack of novelty, or non-obviousness. They are a key part of the process for determining a patent's strength and enforceability.
| Company | Opposition Date | Representative |
|---|---|---|
| VON OPPEN | Nov 15, 2017 | EISENFUHR SPEISER |
| VALENTINI GLASS & COMPONENTS | Sep 11, 2017 | AUTUORI |
The dossier documents provide a comprehensive record of the patent's prosecution history - including filings, correspondence, and decisions made by patent offices - and are crucial for understanding the patent's legal journey and any challenges it may have faced during examination.
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